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refers to a fiber bundle that arises largely from lamina I, lamina IV and lamina V of the spinal cord. It includes both crossed and uncrossed fibers that ascend in the lateral white column and terminate variously in the medulla and pons. It consists of three successive parts: the spinoreticular tract of the spinal cord, the spinoreticular tract of the medulla and the spinoreticular tract of the pons ( Nomina-1983; Carpenter-1983 ).
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